Life Sciences Commons^™

Identification And Extraction Method Of Fragrant Pear Based On Image Detection Under Internet Of Things Applications, Peng Zhou, Huan Wnag, Pengwei Zhang, Shengzhi Liu, Wei Cehn, Weihang Zhao, Bingyu Cao

Turkish Journal of Agriculture and Forestry

With the continuous development of society, agricultural production technology is also improving. Due to the continuous improvement of economic level, the quality of life has also put forward higher requirements, the quality of agricultural products has gradually received more people’s attention. In the picking and sorting process of traditional fragrant pear, the quality control process is not perfect, and the identification and extraction method is not mature enough. In the complex environment of insufficient light or shade of branches and leaves, the pear picking work cannot quickly and accurately locate the target fruit. Therefore, the traditional identification and extraction methods …

Large Trees Promote Belowground Fungal Diversity, James A. Lutz, Joseph D. Birch

Wildland Resources Faculty Publications

Results of research in forest health and forest futures in Utah

Living Dead Forests: Assessing Detrital Services In Puget Sound Pseudotsuga Menziesii Ecosystems, Forrest Becker

Capstone Collection

Coarse woody debris (CWD), the detrital result of down wood recruitment, contributes to wildlife habitat, nutrient cycling, morphological processes like soil formation, and each forest’s sense of place but if undermanaged can fuel wildfires or obstruct stakeholder use. Despite its ubiquity in Puget Sound Douglas fir (Pseudotsuga menziesii) forests in Washington, USA, few studies quantify the exact ecosystem services which down wood provides. This study seeks to understand how forest managers can estimate the ecosystem services of down wood and how human communities perceive down wood management between community, public, and private Douglas fir (P. menziesii) …

Smokejumper Obituary: Heckman, John Howard (Missoula 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Investigation Of The Prevalence Of Fentanyl Analogs In A Drug Testing Population Using Liquid Chromatography Tandem Mass Spectrometry (Lc-Ms-Ms), Ivan Cordova

Student Theses

This study serves to determine the prevalence of novel fentanyl analogs that are present within a drug testing population in New York State. Samples were analyzed using liquid chromatography tandem mass spectrometry (LC-MS/MS) to qualitatively determine the presence of various possible fentanyl analogs. The sample preparation of this assay consisted of a simple dilute and shoot. This method of sample preparation can be quicker, eliminating sample preparation times as well as being less financially strenuous to clinical laboratories as it eliminates the need for various solvents and solid/liquid phase cartridges. The assay was aimed to see if analytes can be …

Modelling Climate Effects On Site Productivity And Developing Site Index Conversion Equations For Jack Pine And Trembling Aspen Mixed Stands, Mahadev Sharma

Aspen Bibliography

Forest site productivity estimates are crucial for making informed forest resource management decisions.These estimates are valuable both for the tree species currently growing in the stands and for those being considered for future stands. Current models are generally designed for pure stands and do not account for the influence of climate on tree growth. Consequently, site index (SI) conversion equations were developed specifically for jack pine (Pinus banksiana Lamb.) and trembling aspen (Populus tremuloides Michx.) trees grown in naturally originated mixed stands. This work involved sampling 186 trees (93 of each species) from 31 even-aged mixed stands (3 …

Heirs Property And The Necessary Role Of Extension In Preventing Land Loss Through Partitioning, Kurt Smith

Journal of Extension

Land loss in the United States continues to be a threat to our inventory of natural resources. The problem of co-tenancy or heirs’ property is a particular and persistent problem throughout the United States leading to fragmentation of property, and the complete loss of forest and farmland. Maintaining enough forest and farmland is essential to local, regional, and international economies. Much can be done to ameliorate the problem through education about the value of successional planning and the requirements of your state regarding the legal practice known as partitioning.

Mapping Urban Tree Canopy Using Publicly Available Satellite Data, Rosemary Mcguinness

Theses and Dissertations

This project addresses the need for accessible, cost-effective tools for quantifying spatial and temporal changes in tree canopy cover in urban areas. Urban tree canopy provides a wide range of ecosystem services, including lowering air temperatures, reducing pollution, and mitigating stormwater runoff. Cities around the world have placed the expansion of their urban forests at the center of their sustainability goals. Consistent and timely data on urban tree canopy is essential for urban greening initiatives to succeed. Existing methods of accessing information about urban tree canopy are highly technical, costly, and labor-intensive, while the freely available source of tree canopy …

Gps Accuracy Of Smartphones For Crowdsourcing Research, Derron L. Dike

Master of Science in Environmental Sciences and Management Projects

ABSTRACT GPS Accuracy of Smartphones for Crowdsourcing Research Derron Dike Utilizing crowdsourcing with smartphones as a method for field data collection can contribute an array of data for scientific studies and land management applications. This study used crowdsourcing to examine smartphone built-in GPS performance for providing location-specific information with potential forestry applications. The usability of smartphones for GPS data collection in forestry studies or other practical applications is dependent on the level of accuracy required for those applications. A Smartphone Accuracy Trial was designed to test the GPS accuracy performance of current smartphones. Participants used the ArcGIS Field Maps application …

Carbon In Non-Forested Wetlands Of The Midwest And Eastern United States, Adrienne B. Keller, Stephen D. Handler

Michigan Tech Publications

Although wetlands make up a small percentage of total land area in the United States, they store a disproportionate amount of carbon largely due to their unique hydrology. Wetlands of the Midwest and Eastern regions are comprised of both mineral soil wetlands and organic soil wetlands (peatlands) and store a significant proportion of all wetland carbon in the contiguous United States. Here, a basic summary of how carbon is stored and moves through these wetlands, and how climate change and management may interact with site conditions to alter wetland carbon cycling, is provided.

Smokejumper Obituary: Whitaker, Floyd E. (Redding 1965), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Tremblings, August 2024, Western Aspen Alliance

Tremblings

Function over form: the benefits of aspen for Greater Sage-grouse

Michel T. Kohl, Associate Professor of Wildlife Management and Wildlife Extension Specialist, University of Georgia

David Dahlgren, Associate Professor and Rangeland Wildlife Extension Specialist, Utah State University

Sage-grouse, and their elaborate springtime breeding displays, are an icon of Western landscapes. Yet, sage-grouse (a sagebrush obligate species) have been facing decades-long declines due to the loss of habitat. Historically, the species ranged across 13 western states and two Canadian provinces. Today, they occur across < 50% of that range, and abundance has declined 80% since 1965 and almost 40% since 2002. Despite this, it was determined in 2015 that the sage-grouse did not warrant Endangered Species protection due to the strength of wide-spread collaborative conservation actions.

Evaluation Of Subjective And Objective Workload Of Forestry Professionals, Hasini L. M. Mapatunage

All Theses

The Southern United States accounts for about 40% of the productive timberland of the country and is known as the wood basket of the United States. Timber logging is an important contributor to South Carolina’s economy. Feller-buncher, skidder and loader operators play a vital role in the timber industry of South Carolina. However, their job is far from easy, especially as there are only a few members of a logging crew. They have to operate complex heavy machinery in challenging terrains while ensuring the efficient harvesting of timber, which demands extraordinary skills, precision, and better decision-making, leading to excessive mental …

Effects Of The Sea Level Rise And Hurricanes In The Coastal Forest Of South Carolina, Siddhartha Regmi

All Theses

Accessing the mortality of the trees following any disturbances is of great interest to researchers in forestry science. This thesis project assessed topographic factors to explain the patterns of tree mortality after Hurricane Hugo in 1989 and investigated continuous tree mortality in relationship to important covariates using long-term data. Aerial photographs were taken one year after Hurricane Hugo, and long-term monitoring plots were set up five years after the hurricane to collect multi-year data. Analysis and visualization showed higher mortality in concave areas near the marsh at approximately 1-2m elevation and 120-180m far from streams after Hurricane Hugo. A model …

I’M A Forest, Not A Saltmarsh, Captain: Carbon And Sap Flow Dynamics In Coastal Forested Wetlands Of The Southeastern United States, Chris Shipway

All Theses

Coastal forested wetlands are identified as some of the highest-priority ecosystems for climate change mitigation. Here, we present two studies conducted in these unique ecosystems.

The first assessed changes in aboveground vegetative C stocks along the estuarine-riverine gradients of the Winyah Bay in South Carolina and the Savannah River in Georgia, using a space-for-time substitution to increase understanding of the impacts to upper estuarine forested wetlands from relative sea level rise. Standing C stocks on the Savannah River averaged 183.6 Mg C ha^-1, while sites on the Winyah system averaged 162.3 Mg C ha^-1. The largest …

Enzyme-Enhanced Ecf Bleaching: Improving Pulp Bleachability And Reducing Its Environmental Footprint, Bingyao Zhou

Dissertations

Enzymes have emerged as effective biocatalysts and environmentally friendly agents in pulp bleaching processes. Despite their potential, the fundamental chemistry underlying enzyme action on pulp fibers during bleaching remains poorly understood, limiting their widespread industrial application. This dissertation aims to investigate how enzymes interact with the chemical components of pulp fibers and their impact on elemental chlorine-free (ECF) bleaching in terms of pulp brightness, chemical consumption, and AOX generation.

Enzymatic pretreatment prior to ECF bleaching sequences was conducted on hardwood and softwood kraft pulp. Xylanase pretreatment significantly reduced chlorine dioxide consumption and enhanced pulp brightness in hardwood kraft pulp. Optimal …

Avian Communities Monitored Along A Successional Chronosequence In Bottomland Hardwood Forests In The Lower Mississippi Alluvial Valley, Eamonn Alasdair Thurmond

Electronic Theses and Dissertations

Bottomland hardwood forests in the Lower Mississippi Alluvial Valley have been extensively reduced due to agriculture conversion and altered hydrology. Remnant forests have undergone further degradation from sources such as a lack of forest management, invasive species, and reduced regeneration of oaks (Quercus spp.). Recent restoration efforts of bottomland hardwood forests have focused on implementing wildlife forestry practices that prioritize restoring wildlife habitat while retaining profitable timber harvests. In this study I surveyed bird communities in bottomland hardwood forests in the Lower Mississippi Alluvial Valley along a successional chronosequence. Birds were sampled using automated recording units over 10 days …

Reburns Of High Severity Patches: Effects On Ponderosa Pine Regeneration And Plant Community Composition, Nadav Mouallem

All Graduate Theses and Dissertations, Fall 2023 to Present

The area burned in high severity fire as well as the proportion of fires burning at high severity have been increasing in southwestern ponderosa pine (Pinus ponderosa) forests since the 1980s. These fires often contain large patches (>100 ha) of 100% tree mortality, which are a concern as they can lead to the establishment of nonnative species and conversion to non-forest vegetation. And, with an increasing amount of fire on the landscape, high severity patches are reburning. However, information on the ecological trajectory of reburns of high-severity patches as well as the utility of remotely sensed burn severity metrics …

The Role Of Forest Disturbance And Habitat Characteristics In Shaping Arthropod Ecology., Kane Alec Lawhorn

Electronic Theses and Dissertations

Disturbances in forests often generate dead wood, which is an important resource for a variety of arthropods. In tropical wet forests where fire is rare, lightning and branchfalls are common disturbances that create canopy gaps with associated large amounts of localized dead wood. By contrast, prescribed fire is a common disturbance in temperate forest that creates habitat heterogeneity and widely dispersed dead wood resources. The ecological effects of these disturbances on arthropod communities are largely unknown. This dissertation investigates how disturbance and habitat associations in both tropical and temperate forest shape arthropod ecology. Throughout, I primarily focus on beetles, ants, …

Utilizing Unmanned Aerial Systems (Uas) And Computer Software To Assess Effects Of Cover Crops On Cash Crop Volumetric Mass And Plant Height, Carlos Andres Garcia Patlan

Theses and Dissertations

Sustainability in agriculture starts with the health of soil-- from its productivity and fertility, to its ability to retain water during droughts and allow for drainage during rain. One approach of improving soil health is the use of cover crops, a practice associated with improved nutrient availability in soils, the promotion of soil biodiversity and organic matter to improve density and structure, effective weed management, and ultimately improved yields of subsequent cash crops. Assessing the cumulative impacts of cover crops is difficult, with various metrics and indicators. Crop dry weight may be a way to predict the effects cover crops …

Smokejumper Obituary: Chrismer, Robert Francis (Missoula 1952), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Van Vleck, James “Jim” (Missoula 1961), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Gorsuch, Robert V. “Bob” (Missoula 1947), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Yellowtail, Rudolph Kenneth “Rudy” (Missoula 1987), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

High Overlap Of Fungi Across The Range Of Douglas-Fir, James A. Lutz, Joseph D. Birch

Wildland Resources Faculty Publications

Results of research in forest health and forest futures in Utah

A Seasonal Decomposition Comparison Between Forest And Turf Habitats: Implications For Climate Change, Amanda Shirmer

DePaul Discoveries

Decomposition is an essential ecosystem service in which microorganisms breakdown organic matter. This process improves soil health and acts as a vital step in global carbon cycles. In this study, we examined decomposition rates and associated soil properties in turf and forest habitats across summer and fall seasons in order to determine how land management practices and climate change may be altering local decomposition regimes. Our study determined that there was a statistically significant difference between decomposition rates in turf and forest ecosystems (P=0.003) and a significant difference in decomposition rate across season (P

Smokejumper Obituary: Wilson, Boyd Chester (Missoula 1953), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Agenda De Investigación Para El Manejo Sustentable Del Manglar En Tamaulipas, México [Research Agenda For The Sustainable Management Of Mangroves In Tamaulipas, Mexico], Carlos Zamora-Tovar, Alejandro Fierro-Cabo, Glenda Nelly Requena-Lara

School of Earth, Environmental, & Marine Sciences Faculty Publications

Se presenta un análisis de la información ecológica disponible sobre los manglares de Tamaulipas, México. El objetivo fue establecer una línea base de conocimiento que defina el estado del arte a partir de la información publicada; actualizar la estructura forestal con datos propios observados en el año 2018; y determinar una agenda de investigación prioritaria para el manejo sostenible del ecosistema de man-glar, ecosistema de vital importancia por la gran variedad de recursos y servicios ambientales que aporta a la sociedad. La investigación bibliográfica recopiló 32 trabajos relevantes: 16 publicaciones formales, siete ediciones institucionales y nueve consideradas literaturas gris; recopilación …

Smokejumper Obituary: Jones, Henry L. “Hank” (Missoula 1953), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Verbeck, Richard L. (North Cascades 1953), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.